The sensor may be placed as far as 1000-Feet (line of sight) away from the receiver in your home. For best performance, mount the sensor on a 4 by 4 post, four to eight feet off the ground * Will not be triggered by animals, people or shadows * Maximum optimal range for vehicle detection is 12-Feet. Additional monitors may be required for driveways exceeding range * Easy installation. Mount the sensor next to driveway on the included stake and plug the receiver into any electrical wall outlet inside * No difficult underground wiring